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Mercury Verado V12 7.6 L (600, SeaPro 500) service guide

Oil, gear oil, spark plugs and the service schedule for the Mercury Verado V12 7.6 L (600, SeaPro 500) (500 to 600 hp, four-stroke), from the factory service manual, plus how we service it in Hawaiʻi.

Models covered: 7.6 L V12 Verado 600 and SeaPro 500, serial 3B332191 and above (cover). Wet sump, transmission (F1/F2/R), steer-by-wire, two counter-rotating props.

Quick answers

What engine oil does a Mercury Verado V12 7.6 L use?
Verado: NMMA FC-W SAE 10W-30. SeaPro: FC-W 25W-40 or 10W-30.
What gear oil does a Mercury Verado V12 7.6 L use, and how much?
High Performance Gear Lubricant (8M0222063); SAE 90 API GL-4 if not available. Quantity: 2.8 L (3.0 US qt) for a gearcase that was filled and drained. New or rebuilt gearcases: fill from the bottom drain port until it comes out the top vent.
What spark plug does a Mercury Verado V12 7.6 L use?
NGK ILKAR7K11S or NGK ILKAR7G9, 14 mm hex. Gap: By plug: ILKAR7G9 0.9 mm (0.035 in.); ILKAR7K11S 1.1 mm (0.043 in.). Gap to the plug fitted.
How often should a Mercury Verado V12 7.6 L be serviced?
The factory schedule lists: Every 200 hours or before storage; Every 1,000 hours. In Hawaiʻi's salt water we do a full yearly service every 200 hours or 1 year, whichever comes first, and a new engine needs its first (break-in) service.
When should the water pump impeller be replaced on a Mercury Verado V12 7.6 L?
The factory schedule says to replace it at 1,000 hours. In Hawaiʻi's warm salt water we replace it every 200 hours or 1 year, whichever comes first, because a worn impeller is the most common cause of overheating.
What is the idle speed of a Mercury Verado V12 7.6 L?
700 r/min in neutral; idle charge 700 to 825 r/min; troll 700 to 1,100 r/min.
What is the propeller nut torque on a Mercury Verado V12 7.6 L?
Front (4-blade) nut 339 N·m (250 lb·ft) with tool 8M0171389. Rear (3-blade) nut 135.6 N·m (100 lb·ft). Props are matched sets.

Maintenance specs

Engine oilVerado: NMMA FC-W SAE 10W-30. SeaPro: FC-W 25W-40 or 10W-30
Oil filterOil the gasket, then 3/4 to 1 turn after it touches
Gear lubricantHigh Performance Gear Lubricant (8M0222063); SAE 90 API GL-4 if not available
Gearcase capacity2.8 L (3.0 US qt) for a gearcase that was filled and drained. New or rebuilt gearcases: fill from the bottom drain port until it comes out the top vent
Gear vent and drain screws11.3 N·m (100 lb·in); replace damaged gaskets
Gearcase pressure test90 to 117 kPa (13 to 17 psi) for 30 minutes; no more than 34 kPa (5 psi) lost; at least 83 kPa (12 psi) left
Spark plugNGK ILKAR7K11S or NGK ILKAR7G9, 14 mm hex
Spark plug gapBy plug: ILKAR7G9 0.9 mm (0.035 in.); ILKAR7K11S 1.1 mm (0.043 in.). Gap to the plug fitted
Idle speed700 r/min in neutral; idle charge 700 to 825 r/min; troll 700 to 1,100 r/min
ThermostatsPrimary/starboard 60 °C (140 °F); secondary/port 71.1 °C (160 °F). Do not swap them
Water pressure700 r/min 10 to 20 kPa (1.5 to 2.9 psi); 6000 r/min 60 to 260 kPa (8.7 to 37.7 psi)
Anode screwsGearcase anode M8 x 35 screws 24.4 N·m (18 lb·ft); transom bracket anode M12 x 30 screws 47 N·m (34.7 lb·ft)
Propeller nutsFront (4-blade) nut 339 N·m (250 lb·ft) with tool 8M0171389. Rear (3-blade) nut 135.6 N·m (100 lb·ft). Props are matched sets
Power trim fluidPower Trim and Steering Fluid or ATF Type F, FA, Dexron II or III; tilted full up with the lock pins in, level with the bottom of the fill hole. Fill plug 2.8 N·m (25 lb·in)
Valve lash clearanceIN 0.125 to 0.225 mm (0.005 to 0.009 in.); EX 0.300 to 0.400 mm (0.012 to 0.016 in.)

Service schedule

The factory maintenance intervals, with what is replaced and what is checked at each. Rows marked Hawaiʻi are our shop's yearly service for salt water use.

  1. Every 200 hours or before storage

    Replace: engine oil, oil drain plug gasket, fuel filter, gear case oil, gear case plug gaskets, water pump impeller

    Check: anodes

  2. Every 1,000 hours

    Replace: engine oil, oil drain plug gasket, fuel filter, gear case oil, gear case plug gaskets, water pump impeller

    Check: anodes

We replace the water pump impeller at every service from 200 hours up, which can be sooner than the factory schedule, because of Hawaiʻi’s warm salt water.

Source: Mercury 7.6L V12 600 Verado and 500 SeaPro service manual, 90-8M0217809. Specs can change by model year and serial number, so always confirm your exact model from the serial tag on the clamp bracket.

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